Using space-VLBI to probe gravity around Sgr A* | Astronomy & Astrophysics (A&A)

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Table 4.

Parameters used for the data generation and image reconstruction.

Synthetic data generation
t_int [s]	Δν [GHz]	t_gap^(a) [s]	ν_obs [GHz]	Gain off set ^(b)
12	4, 8 ^(*)	200	230	0.1

Image reconstruction
Data	Weighting ^(c)	Regularizer		Weighting ^(c)

Visibilities	100	Simple entropy		2
Bi-spectra	10	Simple entropy		1

Notes.

^(*)

Only used for the space-EHT configuration.

^(a)

Time difference between GRRT images.

^(b)

Antenna gains are drawn form a normal distribution with mean = 1.0 and standard deviation = 0.1 (gain off set).

^(c)

Weighting factor for data terms and image entropies used during the image reconstruction.

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